mubasharshafiq6380 mubasharshafiq6380

09-06-2019
Mathematics

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Dev thinks of a whole number. He multiplies it by 4. He rounds his answer to the nearest 10. The result is 50. Write all the possible number that Dev could have started with.

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09-06-2019

Answer:

{12, 13}

Step-by-step explanation:

Whole numbers that round to 50 will be in the range 45 to 54. Multiples of 4 in that range are 48 and 52.

48 = 4·12

52 = 4·13

Dev's number could be either 12 or 13.

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